Airtel Prepaid SIM — activation of new sim

I am working as an executive in a nationalized bank, so I had given my identification proof from my bank. I was allotted a connection [protected] in Feb 09 in
Mumbai.But the same was not actived for want of address proof as alleged by your office . It is strange to say the least. Even after a lapse of more than 5 months and many calls and reminders, my mobile no is not activated . Do I get it activated or I surrender all our moble connections, please respond .